Results 71 to 80 of about 8,403 (204)
Accumulation of Dust on a Surface and the Subsequent Formation of Compact Aggregate Piles
Journal of Geophysical Research: Planets, Volume 130, Issue 10, October 2025.Abstract Dust aggregation is a prominent topic in space physics, yet the accumulation of dust on surfaces in airless environments remains poorly understood. It is commonly assumed that, during the initial stages of dust deposition, particles spread uniformly to form a monolayer.
G. Griffin +4 more
wiley +1 more source
Chondrules in enstatite chondrites [PDF]
, 2017 We review silicate chondrules and metal-sulfide nodules in unequilibrated enstatite chondrites (EH3 and EL3). Their unique mineralogical assemblage, with a wide diversity of opaque phases, nitrides, nearly FeO-free enstatite etc. testify to exceptionally
E. Jacquet, L. Piani, M. Weisberg
semanticscholar +1 more source
Meteoritics &Planetary Science, Volume 60, Issue 10, Page 2376-2400, October 2025.Abstract It has been proposed that IIE iron meteorites formed through impact processes on a parent body that was composed of either the H chondrites or a much‐debated fourth ordinary chondrite group, the HH chondrites. To resolve this debate, we have compiled a large dataset for the ordinary chondrites, low‐fayalite ungrouped chondrites, and IIE irons,
Rachel S. Kirby +2 more
wiley +1 more source
Meteoritics &Planetary Science, Volume 60, Issue 10, Page 2359-2375, October 2025.Abstract We report the first oxygen isotope measurements of tochilinite (δ17O: 11.0 ± 2.1‰, δ18O: 23.5 ± 4.0‰ and Δ17O: −1.1 ± 1.2‰) in a CM chondrite (Winchcombe, lithology C [CM2.2/2.3]). We analyzed type‐I tochilinite‐cronstedtite intergrowths (TCIs)—formed by pseudomorphic replacement of kamacite.
M. D. Suttle +7 more
wiley +1 more source
Revista Mexicana de Ciencias Geológicas, 2018 There is a good consensus about the age of the most primitive materials in the Solar System represented by carbonaceous chondrites. From these, a canonical age of the Solar System of 4567 Ma has been defined.
María del Sol Hernández-Bernal +1 more
doaj
Magnesium phosphate in the Cold Bokkeveld (CM2) carbonaceous chondrite
Meteoritics &Planetary Science, Volume 60, Issue 9, Page 2017-2032, September 2025.Abstract Hydrous Mg‐phosphate was first described from astromaterials in particles returned from the C‐type asteroid Ryugu, and has subsequently been found in samples of the B‐type asteroid Bennu and CI1 carbonaceous chondrites. This phase may have been highly significant as a source of bioessential compounds for early Earth.
Martin R. Lee +2 more
wiley +1 more source
Early evolution of the solar accretion disk inferred from Cr-Ti-O isotopes in individual chondrules [PDF]
, 2020 J. Schneider +4 more
semanticscholar +1 more source
Geosciences, 2015 A comprehensive classification of primitive achondrites is difficult due to the high compositional and textural variability and the low number of samples available.
Vanni Moggi Cecchi, Stefano Caporali
doaj +1 more source